Key blank for Mul-T-Lock G066/066C Garrison locks - sold each, Key Blank 066C Black Head - special key machine required to cut keys. Supplied keys will be either blue or black until we run out of blue. Manufacturer says blue keys with word Garrison are discontinued. - Credentials required to cut blank to specification. Duplicate keys will require a scanned image of both sides of your key registration card. Please email images upon receiving your order confirmation email.